This exhaust back pressure tester identifies restricted exhaust components by measuring pressure directly through O2 sensor ports. It includes a 3-stage adapter and a Toyota-style flange to accommodate various port configurations and self-tap access. The 2-1/2" (63.5 mm) gauge provides readings from 0-15 psi with 1/2 psi accuracy and connects to the adapters using a 6" (15.2 cm) high-temperature silicone tube.

This exhaust back pressure tester identifies restricted exhaust components by measuring pressure directly through O2 sensor ports. It includes a 3-stage adapter and a Toyota-style flange to accommodate various port configurations and self-tap access. The 2-1/2" (63.5 mm) gauge provides readings from 0-15 psi with 1/2 psi accuracy and connects to the adapters using a 6" (15.2 cm) high-temperature silicone tube.